We are hooking up a Jacuzzi and need to run # 8 wire above ground What PVC should we use to run under our house to get to the back yard? I have read Schedule 80 PVC will work.
Schedule 80 will be required if exposed (above ground). Annex C of the NEC shows #8 THHN,THWN,THWN2; 3 wires in 1/2" and 5 wires in 3/4". You should be feeding the tub with a GFCI breaker.